Patents by Inventor James Henry Yager
James Henry Yager has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11162436Abstract: A camless valve control system for an internal combustion engine in disclosed. The system includes a hydraulic distributor, having a rotating distributor shaft timed to the operation of the engine, the rotating distributor shaft comprising an internal flow dividing plug channeling an internal hydraulic flow to first and second portions of the rotating distributor shaft; an opening control ring oriented coaxially with the rotating distributor shaft with at least one hole configured to cyclically align with the rotating distributor shaft and provide opening hydraulic control to open a controlled valve, and a closing control ring oriented coaxially with the rotating distributor shaft with at least one hole configured to cyclically align with the rotating distributor shaft and provide closing hydraulic control to close the controlled valve.Type: GrantFiled: September 14, 2020Date of Patent: November 2, 2021Assignee: JHYAGER CONSULTING L.L.C.Inventor: James Henry Yager
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Publication number: 20210207545Abstract: A camless valve control system for an internal combustion engine in disclosed. The system includes a hydraulic distributor, having a rotating distributor shaft timed to the operation of the engine, the rotating distributor shaft comprising an internal flow dividing plug channeling an internal hydraulic flow to first and second portions of the rotating distributor shaft; an opening control ring oriented coaxially with the rotating distributor shaft with at least one hole configured to cyclically align with the rotating distributor shaft and provide opening hydraulic control to open a controlled valve, and a closing control ring oriented coaxially with the rotating distributor shaft with at least one hole configured to cyclically align with the rotating distributor shaft and provide closing hydraulic control to close the controlled valve.Type: ApplicationFiled: September 14, 2020Publication date: July 8, 2021Inventor: James Henry Yager
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Patent number: 11028791Abstract: Various methods and systems are provided for an exhaust gas recirculation system. In one embodiment, an engine method comprises routing exhaust gas from a first cylinder group of an engine to an exhaust gas recirculation passage coupled to both an intake passage and an exhaust passage of the engine, the first cylinder group having a first amount of positive intake and exhaust valve overlap, and routing exhaust gas from a second cylinder group of the engine only to the exhaust passage of the engine, the second cylinder group having a second, smaller amount of positive intake and exhaust valve overlap.Type: GrantFiled: December 19, 2019Date of Patent: June 8, 2021Assignee: TRANSPORTATION IP HOLDINGS, LLCInventor: James Henry Yager
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Patent number: 10844813Abstract: Systems and methods are provided for controlling exhaust gas recirculation (EGR). In one example, an engine system includes a first EGR valve coupling an exhaust manifold to an engine exhaust system, a second EGR valve coupling the exhaust manifold to an engine intake system, and a control unit. The control unit selectively adjusts a position of the first EGR valve based on a target amount, and adjusts a position of the second EGR valve based on the target amount and a position of the first EGR valve. Responsive to a first degradation condition of the first EGR valve, the control unit adjusts the position of the second EGR valve based on the target amount and based on a pressure of the first exhaust manifold, and responsive to a second degradation condition of the first EGR valve, adjusts the position of the second EGR valve based on the target amount.Type: GrantFiled: April 8, 2019Date of Patent: November 24, 2020Assignee: Transportation IP Holdings, LLCInventors: Dipankar Deb, Manthram Sivasubramaniam, Prashant Srinivasan, Sharath Sridhar Aramanekoppa, Prem Kumar Patchaikani, Sachin Shivajirao Kulkarni, Sebastian Walter Freund, Jassin Marcel Fritz, Georgios Bikas, James Henry Yager, Shashi Kiran
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Publication number: 20200123992Abstract: Various methods and systems are provided for an exhaust gas recirculation system. In one embodiment, an engine method comprises routing exhaust gas from a first cylinder group of an engine to an exhaust gas recirculation passage coupled to both an intake passage and an exhaust passage of the engine, the first cylinder group having a first amount of positive intake and exhaust valve overlap, and routing exhaust gas from a second cylinder group of the engine only to the exhaust passage of the engine, the second cylinder group having a second, smaller amount of positive intake and exhaust valve overlap.Type: ApplicationFiled: December 19, 2019Publication date: April 23, 2020Inventor: James Henry Yager
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Patent number: 10612433Abstract: A camless valve control system for an internal combustion engine, includes a hydraulic pump, with a rotating shaft timed to the operation of the engine and a hydraulic actuator configured to selectively open and close one of an intake valve and an exhaust valve of the engine. The hydraulic actuator includes a rotating cylindrical pump body and one or more control rings with holes channeling the flow of the hydraulic control fluid to affect the selective opening and closing of the one of the intake value and the exhaust valve. The pump body includes a cylindrical center portion configured to receive torque from the hydraulic pump and at least one channel providing a flow of hydraulic control fluid from the pump.Type: GrantFiled: March 9, 2018Date of Patent: April 7, 2020Inventor: James Henry Yager
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Patent number: 10550777Abstract: Various methods and systems are provided for an exhaust gas recirculation system. In one embodiment, an engine method comprises routing exhaust gas from a first cylinder group of an engine to an exhaust gas recirculation passage coupled to both an intake passage and an exhaust passage of the engine, the first cylinder group having a first amount of positive intake and exhaust valve overlap, and routing exhaust gas from a second cylinder group of the engine only to the exhaust passage of the engine, the second cylinder group having a second, smaller amount of positive intake and exhaust valve overlap.Type: GrantFiled: July 13, 2012Date of Patent: February 4, 2020Assignee: Transportation IP Holdings, LLCInventor: James Henry Yager
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Publication number: 20190234352Abstract: Systems and methods are provided for controlling exhaust gas recirculation (EGR). In one example, an engine system includes a first EGR valve coupling an exhaust manifold to an engine exhaust system, a second EGR valve coupling the exhaust manifold to an engine intake system, and a control unit. The control unit selectively adjusts a position of the first EGR valve based on a target amount, and adjusts a position of the second EGR valve based on the target amount and a position of the first EGR valve. Responsive to a first degradation condition of the first EGR valve, the control unit adjusts the position of the second EGR valve based on the target amount and based on a pressure of the first exhaust manifold, and responsive to a second degradation condition of the first EGR valve, adjusts the position of the second EGR valve based on the target amount.Type: ApplicationFiled: April 8, 2019Publication date: August 1, 2019Inventors: Dipankar Deb, Manthram Sivasubramaniam, Prashant Srinivasan, Sharath Sridhar Aramanekoppa, Prem Kumar Patchaikani, Sachin Shivajirao Kulkarni, Sebastian Walter Freund, Jassin Marcel Fritz, Georgios Bikas, James Henry Yager, Shashi Kiran
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Patent number: 10253731Abstract: Systems and methods are provided for controlling exhaust gas recirculation (EGR). In one example, an engine system includes a first EGR valve coupling an exhaust manifold to an engine exhaust system, a second EGR valve coupling the exhaust manifold to an engine intake system, and a control unit. The control unit selectively adjusts a position of the first EGR valve based on a target amount, and adjusts a position of the second EGR valve based on the target amount and a position of the first EGR valve. Responsive to a first degradation condition of the first EGR valve, the control unit adjusts the position of the second EGR valve based on the target amount and based on a pressure of the first exhaust manifold, and responsive to a second degradation condition of the first EGR valve, adjusts the position of the second EGR valve based on the target amount.Type: GrantFiled: February 17, 2016Date of Patent: April 9, 2019Assignee: GE Global Sourcing LLCInventors: Dipankar Deb, Manthram Sivasubramaniam, Prashant Srinivasan, Sharath Sridhar Aramanekoppa, Prem Kumar Patchaikani, Sachin Shivajirao Kulkarni, Sebastian Walter Freund, Jassin Marcel Fritz, Georgios Bikas, James Henry Yager, Shashi Kiran
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Publication number: 20180363516Abstract: A camless valve control system for an internal combustion engine, includes a hydraulic pump, with a rotating shaft timed to the operation of the engine and a hydraulic actuator configured to selectively open and close one of an intake valve and an exhaust valve of the engine. The hydraulic actuator includes a rotating cylindrical pump body and one or more control rings with holes channeling the flow of the hydraulic control fluid to affect the selective opening and closing of the one of the intake value and the exhaust valve. The pump body includes a cylindrical center portion configured to receive torque from the hydraulic pump and at least one channel providing a flow of hydraulic control fluid from the pump.Type: ApplicationFiled: March 9, 2018Publication date: December 20, 2018Inventor: James Henry Yager
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Patent number: 10094324Abstract: A method of operating an internal combustion engine is provided. The method includes combusting a mixture of fresh air and fuel within multiple cylinders. The method also includes directing a first portion of exhaust gases into a first-stage turbine and a second-stage turbine of a turbocharger for expanding the exhaust gases, directing a second portion of exhaust gases from the exhaust manifold via an exhaust channel bypassing the first-stage turbine and recirculating a third portion of exhaust gases into an intake manifold after mixing with fresh air. The method includes controlling at least one of: reducing a normal engine speed at each engine power setting while maintaining constant engine power level by increasing a fuel injection per cycle; concurrently increasing a flow rate of the third portion of exhaust gas during recirculation; and advancing a fuel injection timing for reducing emission levels that meets Tier 4 requirements.Type: GrantFiled: May 30, 2013Date of Patent: October 9, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Thomas Michael Lavertu, Adam Edgar Klingbeil, Roy James Primus, Omowoleola Chukwuemeka Akinyemi, Venu Gopal Gummadavelli, Barry Allen Record, James Henry Yager
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Patent number: 9695723Abstract: Various methods and systems are provided for a combustion system of an engine. In one example, a combustion system comprises a piston crown bowl with a central apex, a combustion chamber operable at a compression ratio in a range of from about 13:1 to about 17:1, the combustion chamber formed at least partially by the piston crown bowl, and a fuel injector with a nozzle extending into a central portion of the combustion chamber that is operable to inject fuel directly into the combustion chamber, the nozzle defining a number of apertures that is in a range of from six to ten.Type: GrantFiled: January 15, 2014Date of Patent: July 4, 2017Assignee: General Electric CompanyInventors: Barry Record, Roy James Primus, Venu Gummadavelli, James Henry Yager, Omowoleola Chukwuemeka Akinyemi, Adam Edgar Klingbeil, Thomas Michael Lavertu
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Publication number: 20160160811Abstract: Systems and methods are provided for controlling exhaust gas recirculation (EGR). In one example, an engine system includes a first EGR valve coupling an exhaust manifold to an engine exhaust system, a second EGR valve coupling the exhaust manifold to an engine intake system, and a control unit. The control unit selectively adjusts a position of the first EGR valve based on a target amount, and adjusts a position of the second EGR valve based on the target amount and a position of the first EGR valve. Responsive to a first degradation condition of the first EGR valve, the control unit adjusts the position of the second EGR valve based on the target amount and based on a pressure of the first exhaust manifold, and responsive to a second degradation condition of the first EGR valve, adjusts the position of the second EGR valve based on the target amount.Type: ApplicationFiled: February 17, 2016Publication date: June 9, 2016Applicant: General Electric CompanyInventors: Dipankar Deb, Manthram Sivasubramaniam, Prashant Srinivasan, Sharath Sridhar Aramanekoppa, Prem Kumar Patchaikani, Sachin Shivajirao Kulkarni, Sebastian Walter Freund, Jassin Marcel Fritz, Georgios Bikas, James Henry Yager, Shashi Kiran
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Publication number: 20150198070Abstract: Various methods and systems are provided for a combustion system of an engine. In one example, a combustion system comprises a piston crown bowl with a central apex, a combustion chamber operable at a compression ratio in a range of from about 13:1 to about 17:1, the combustion chamber formed at least partially by the piston crown bowl, and a fuel injector with a nozzle extending into a central portion of the combustion chamber that is operable to inject fuel directly into the combustion chamber, the nozzle defining a number of apertures that is in a range of from six to ten.Type: ApplicationFiled: January 15, 2014Publication date: July 16, 2015Applicant: General Electric CompanyInventors: Barry Record, Roy James Primus, Venu Gummadavelli, James Henry Yager, Omowoleola Chukwuemeka Akinyemi, Adam Edgar Klingbeil, Thomas Michael Lavertu
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Publication number: 20140358404Abstract: A method of operating an internal combustion engine is provided. The method includes combusting a mixture of fresh air and fuel within multiple cylinders. The method also includes directing a first portion of exhaust gases into a first-stage turbine and a second-stage turbine of a turbocharger for expanding the exhaust gases, directing a second portion of exhaust gases from the exhaust manifold via an exhaust channel bypassing the first-stage turbine and recirculating a third portion of exhaust gases into an intake manifold after mixing with fresh air. The method includes controlling at least one of: reducing a normal engine speed at each engine power setting while maintaining constant engine power level by increasing a fuel injection per cycle; concurrently increasing a flow rate of the third portion of exhaust gas during recirculation; and advancing a fuel injection timing for reducing emission levels that meets Tier 4 requirements.Type: ApplicationFiled: May 30, 2013Publication date: December 4, 2014Inventors: Thomas Michael Lavertu, Adam Edgar Klingbeil, Roy James Primus, Omowoleola Chukwuemeka Akinyemi, Venu Gopal Gummadavelli, Barry Allen Record, James Henry Yager
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Patent number: 8763381Abstract: A method of heating an engine exhaust gas of an engine, including flowing a first exhaust gas at a first temperature within and along internal flow channels of a catalyst brick, and flowing a second exhaust gas at a second, different, temperature around an exterior of the catalyst brick. Heat may be transferred between the gases and the catalyst brick to achieve various operations.Type: GrantFiled: August 22, 2012Date of Patent: July 1, 2014Assignee: General Electric CompanyInventor: James Henry Yager
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Publication number: 20140014075Abstract: Various methods and systems are provided for an exhaust gas recirculation system. In one embodiment, an engine method comprises routing exhaust gas from a first cylinder group of an engine to an exhaust gas recirculation passage coupled to both an intake passage and an exhaust passage of the engine, the first cylinder group having a first amount of positive intake and exhaust valve overlap, and routing exhaust gas from a second cylinder group of the engine only to the exhaust passage of the engine, the second cylinder group having a second, smaller amount of positive intake and exhaust valve overlap.Type: ApplicationFiled: July 13, 2012Publication date: January 16, 2014Inventor: James Henry Yager
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Publication number: 20120312013Abstract: A method of heating an engine exhaust gas of an engine, including flowing a first exhaust gas at a first temperature within and along internal flow channels of a catalyst brick, and flowing a second exhaust gas at a second, different, temperature around an exterior of the catalyst brick. Heat may be transferred between the gases and the catalyst brick to achieve various operations.Type: ApplicationFiled: August 22, 2012Publication date: December 13, 2012Applicant: GENERAL ELECTRIC COMPANYInventor: James Henry Yager
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Patent number: 8261542Abstract: A method of heating an engine exhaust gas of an engine, including flowing a first exhaust gas at a first temperature within and along internal flow channels of a catalyst brick, and flowing a second exhaust gas at a second, different, temperature around an exterior of the catalyst brick. Heat may be transferred between the gases and the catalyst brick to achieve various operations.Type: GrantFiled: September 3, 2008Date of Patent: September 11, 2012Assignee: General Electric CompanyInventor: James Henry Yager
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Publication number: 20120222659Abstract: Various methods and systems are provided for operating an exhaust gas recirculation engine having a plurality of exhaust gas donor cylinders and a plurality of non-donor cylinders. One example method includes firing each of the engine cylinders in a cylinder firing order, including firing at least one of the non-donor cylinders between every donor cylinder firing of the engine cycle.Type: ApplicationFiled: March 3, 2011Publication date: September 6, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Sachin Shivajirao Kulkarni, Sebastian Walter Freund, Jassin Marcel Fritz, Georgios Bikas, James Henry Yager, Shashi Kiran